Manufacture of window regulators



Patented Bee. 25, 1928.

uni-rs) STATES HOY/'ARD B. I-IASKINS, OF TOLEDO, OHI,

Assrenon To 'ri-rn Dunn COMPANY, or

TOLEDO, GHIO, A.CURPORATION F DELAWARE.

MANUFACTURE OF I/VINDOW REGULAIQRS.k y

Appucanon filed my 12,1926, sensi rIhe invention rela-testo the manufacture of window regulators and refers particularly to the manufacture of window regulator units each comprising a gear segment and a lifter arm. One of the objects of the invention is the manufacture of the gear segments with the ininimiun loss of material andl with the minimum cost. Another object is the economical manufacture of the units. TWith these` as well as other objects in view the invention resides in the novel features of con-j struction and combinations and arrangements of parts as more fully hereinafter set forth.

In the drawings Figure l is a plan view yof a window regulator unit comprising a gear segment and a lifter arm;

Figure 2 is a plan view of the blank from which the gear segments are formed an showing the lines of severing.

As shown infFigure l, 1 is the lifter arm and 2 the gear segment whichV is secured to the lifter arm and forms therewith a window regulator unit, the arm being connected at its upper end to the window and the gear seg-` ment meshing with the driving pinion. To economically manufacture the gear segment vI form a circular blank 3 with the peripheral teeth 4L preferably by hobbing the blank. The blank is then symmetrically severed to form the series of like gear segments 2 with the teeth Ll at their outer edges and the pair of anchoring portions 5 and 6 at their inner edges and also at their ends. The anchoring portions of each gear segment have aligned edges 7 at their ends for abutting the lifter arm andthe anchoring portion 5 has the substantially parallel edges 8 and 9 at its sides while the anchoring portion 6 has the substantially parallel edges 10 and 1l at its sides. These anchoring portions are so arranged that the anchoring portions 5 overlap the anchoring portions 6 of adjacent gear segments and a single lineof severing separatesthese overlapping anchoring portions.

Furthermore, the anchoring portions 6 are so arranged that vthe severing of the central approximately triangular-shaped portion 12 of the blank 3 completes the severing of these anchoring portions and further cooperates with the same to form a recess in the inner edge of each gear segment so that the aligned edgesof the pair of anchoring portions may No. 121,954. Renew-@amy Y11, les?.

lifter arm the diameter/of the blank from which the gear segment is formed is kept at the minimum, andat the same time a series of gear segments may be formed from this blank so that a decided saving in material as well as vcost is effected. Insecuring a gear segment to a lifter arm it is to be noted that the teeth of the gear segment extend equally in opposite directions from the radial line passing through the pivotal axis of the arm so that the latter may swing equally in either direction with the driving pinion in mesh with the gear segment.

fith this method of forming bot-h the gear `segments and securing the gear segments to the lifter arms to form the window regulator units, it will be seen that both the gear segments and window regulator units may be economically manufactured. It will also be seen that the gear segments are secured to the lifter arms in the planes thereof, thereby increasing the strength of the window regulator units, as well as decreasing their thickness.

What I claim as my invention is: l. In the manufacture of gear segments each havinga series of teeth at one edge and anchoring portions at the opposite edge, the forming of a blank with teeth at its periphery and the severing of the blank into! like gear segments with overlapping anchoring portions.

2. In the manufacture of gear segments each having an arcuate series of teeth at one edge and anchoring portions at the. opposite edge near the ends, the forming of al blank with teeth yat its periphery and the severing of the blank into a series of like gear segments with overlapping anchoring portions.

3. In the manufacture of window regulator gearing, the forming of a circular blankw'ith peripheral teeth and the symmetrical severingof the blank into like gear segments with overlapping anchoring portions at their ends.

t. In the manufacture of a window regulator, the forming of al circular blank with peripheral teeth, the severing of the blank into lll) like gear segments With overlapping anchoring portions and the securing oit like lifter arms to the anchoring portions of the gear segments. l

5. In the manufacture of a Window regulator, the forming of a circular blank TVith peripheral teeth, the severing of the blank into a series of like gear segments With overlapping anchoring portions at their ends and the Welding ot like lifter arms to the edges of the anchoring portions ozt the gear segments.

6. In a Window regulator, the combination ot a lifter arm and a gear segment having an arcuate series of teeth at one edge and a plurality ot' anchoring portions at the opposite edge set into and Welded to said arm.

7 In a Window regulator', the combination of a litter arm and a gear segment having an arcuate series of teeth at one edge ot a length to to be included With an angle of 120 degrees having as its apex the central point about which the teeth extend concentric'ally, said gear segment also having a plurality ot anchoring portions at the opposite edge and near its ends set into and Welded to said arm.

8. In the manufacture of a Window regulator, the forming or' a circular blank with peripheral teeth, the severing of the blan into like gear segments With overlapping anchoring portions and the securing oit the anchoring portions ot the gear segments to lit er arms in the planes thereof.

9. In a Window regulator, the combin tion of a lifter arm member and a member having teeth at an edge, one oit said members having an anchoring portion set into and Welded to theother member.

l0. ln the manufacture ota `Win'tlow regulator, the forming of a toothed member with teeth at its periphery, the forming of a lifl'ter arm member, the assembling ot' the members in the same plane and with one member set into the other, and the securing ot the adjacent portions of the members.

, lntestimony whereof l alix my signature.y

HOWARD B. Haskmaf 

